/Engine/Source/Runtime/RHI/Public/DynamicRHI.h
CAUTION: Even though this is marked as threadsafe, it is only valid to call from the render thread. It is need not be threadsafe on platforms that do not support or aren't using an RHIThread FlushType: Thread safe, but varies by RHI
bool RHIGetRenderQueryResult ( [FRHIRenderQuery](API\Runtime\RHI\FRHIRenderQuery) * RenderQuery, uint64 & OutResult, bool bWait, uint32 GPUIndex )